Kinetic and Potential Energy Objectives You will be able to define and identify Kinetic and...
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Transcript of Kinetic and Potential Energy Objectives You will be able to define and identify Kinetic and...
![Page 1: Kinetic and Potential Energy Objectives You will be able to define and identify Kinetic and Potential energy. You will be able to illustrate examples.](https://reader036.fdocuments.net/reader036/viewer/2022062516/56649e575503460f94b4f18d/html5/thumbnails/1.jpg)
Kinetic and Potential Energy
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Objectives• You will be able to define and identify Kinetic and Potential energy.
• You will be able to illustrate examples of potential and kinetic energy in everyday life (objects at rest, falling water, and geological faults) TEKs 7-8A
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Definition of Energy…The ability or capacity to do work.
Measured by the capability of doing work: potential energy
or the conversion of this capability to motion:
kinetic energy.
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Potential Energy…Energy due to position or stored energy.To increase the energy of an object, you can raise it to a higher elevation.
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Examples of Potential Energy:Stretching a rubber band.. -Stores energy
Water at the top of a waterfall.. -Stores energy
Yo–Yo in held in your hand.. -Stores energy because of position
Drawing a Bow… -Stores energy because of position
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What is Elastic Potential Energy?Potential energy due compression or expansion of an elastic object.
Notice the ball compressingand expanding
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What is Chemical Potential Energy?
• Potential energy stored within the chemical bonds of an object
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• When the position of an object is altered, it creates Potential Energy.
• A yo-yo on the table has limited energy but when picked up, it alters its position and now it has the ability (or potential) to do more work.
• A bow doesn’t have the capacity to do work, unless it’s held at an elevated position.
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Potential Energy Converted to Kinetic Energy…
When stored energy begins to move, the object now transfers from potential energy into kinetic energy.
Standing still Running
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Definition of Kinetic Energy…
The energy of motion.
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Examples of Kinetic Energy…
•Shooting a rubber band.•Water falling over the fall.•A Yo-Yo in motion.•Releasing the arrow from the bow.
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Summary of What You’ve Learned..Example using a coin:
• Holding a coin in you hand alters the coins original position.
• The coin has potential energy because it has ability to do work.
• Dropping the coin in the bank, changes the stored energy into motion.
• This transfers the coin’s energy from potential to kinetic energy.
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Energy Stored in Earth
The Earth stores energy along fault lines which build ups (potential) and can be released as an earthquake (kinetic).
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Check for understandingAnswer the following questions!
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The diagram above shows a barrel moving toward a waterfall. The barrel will have the greatest potential energy at which of these locations?
A WB XC YD Z
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Which of the following best represents stored potential energy?
A Air leaking from a flat tireB Stress built up in a rock faultC Heat given off by a forest fireD Water flowing through a hose
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At which point on the roller coaster will the car have the greatest amount of potential energy?
A WB XC YD Z
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Since you are now done……
1.Make Sure you filled in ALL your notes, go back if you haven’t.
2.Click on the link below in order to continue learning!http://phet.colorado.edu/en/simulation/energy-skate-park-basics Click ‘Run Now’ to download.